What is the proper path to sub-folders?

[AndrewAK]

This Link refers to a file that is in the main folder 

<link rel="stylesheet" type="text/css" href="mystyle.css">

What is the proper path used when referencing a file located in a sub-folder?

[Dodra]

You can use a relative link: 

Index
CSS (folder)
    mystyle.css
images (folder)
    img1.jpg
   background.jpg

The CSS fille is inside the CSS folder. So link from index to the css file you use: "css/mystyle.css".
To link from the CSS to the images (for say, a background-image, you can do this: "../images/background.jpg".

 

 

 

If instead you use an absolute link you can use: "http://www.mysite.com/css/mystyle.css".